FROM docker.io/library/ubuntu:22.04

LABEL com.github.containers.toolbox="true" \
      name="ubuntu-toolbox" \
      version="22.04" \
      usage="This image is meant to be used with the toolbox command" \
      summary="Base image for creating Ubuntu Toolbx containers" \
      maintainer="Ievgen Popovych <jmennius@gmail.com>"

# Remove apt configuration optimized for containers
# Remove docker-gzip-indexes to help with "command-not-found"
RUN rm /etc/apt/apt.conf.d/docker-gzip-indexes /etc/apt/apt.conf.d/docker-no-languages

# Enable myhostname nss plugin for clean hostname resolution without patching
# hosts (at least for sudo), add it right after 'files' entry. We expect that
# this entry is not present yet. Do this early so that package postinst (which
# adds it too late in the order) skips this step
RUN sed -Ei 's/^(hosts:.*)(\<files\>)\s*(.*)/\1\2 myhostname \3/' /etc/nsswitch.conf

# Restore documentation but do not upgrade all packages
# Install ubuntu-minimal & ubuntu-standard
# Install extra packages as well as libnss-myhostname
COPY extra-packages /
RUN sed -Ei '/apt-get (update|upgrade)/s/^/#/' /usr/local/sbin/unminimize && \
    apt-get update && \
    yes | /usr/local/sbin/unminimize && \
    DEBIAN_FRONTEND=noninteractive apt-get -y install \
        ubuntu-minimal ubuntu-standard \
        libnss-myhostname \
        flatpak-xdg-utils \
        $(cat extra-packages | xargs) && \
    rm -rd /var/lib/apt/lists/*
RUN rm /extra-packages

# Fix empty bind-mount to clear selinuxfs (see #337)
RUN mkdir /usr/share/empty

# Add flatpak-spawn to /usr/bin
RUN ln -s /usr/libexec/flatpak-xdg-utils/flatpak-spawn /usr/bin/

# Disable APT ESM hook which tries to enable some systemd services on each apt invocation
RUN rm /etc/apt/apt.conf.d/20apt-esm-hook.conf
